java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:03:23,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:03:23,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:03:23,615 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:03:23,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:03:23,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:03:23,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:03:23,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:03:23,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:03:23,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:03:23,627 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:03:23,627 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:03:23,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:03:23,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:03:23,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:03:23,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:03:23,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:03:23,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:03:23,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:03:23,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:03:23,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:03:23,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:03:23,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:03:23,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:03:23,643 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:03:23,644 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:03:23,645 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:03:23,645 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:03:23,646 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:03:23,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:03:23,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:03:23,648 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:03:23,648 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:03:23,649 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:03:23,650 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:03:23,650 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:03:23,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:03:23,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:03:23,665 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:03:23,665 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:03:23,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:03:23,666 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:03:23,666 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:03:23,667 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:03:23,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:03:23,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:03:23,667 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:03:23,667 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:03:23,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:03:23,668 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:03:23,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:03:23,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:03:23,668 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:03:23,670 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:03:23,670 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:03:23,712 INFO ]: Repository-Root is: /tmp [2018-06-22 09:03:23,728 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:03:23,734 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:03:23,737 INFO ]: Initializing SmtParser... [2018-06-22 09:03:23,738 INFO ]: SmtParser initialized [2018-06-22 09:03:23,738 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 [2018-06-22 09:03:23,740 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 09:03:23,837 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 unknown [2018-06-22 09:03:24,330 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1.smt2 [2018-06-22 09:03:24,334 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:03:24,341 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:03:24,341 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:03:24,341 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:03:24,342 INFO ]: ChcToBoogie initialized [2018-06-22 09:03:24,345 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,432 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24 Unit [2018-06-22 09:03:24,432 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:03:24,434 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:03:24,434 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:03:24,434 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:03:24,454 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,454 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,474 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,474 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,480 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,485 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,487 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... [2018-06-22 09:03:24,490 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:03:24,491 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:03:24,491 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:03:24,491 INFO ]: RCFGBuilder initialized [2018-06-22 09:03:24,492 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:03:24,520 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:03:24,520 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:03:24,520 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:03:24,520 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:03:24,520 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:03:24,520 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 09:03:24,985 INFO ]: Using library mode [2018-06-22 09:03:24,986 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:03:24 BoogieIcfgContainer [2018-06-22 09:03:24,986 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:03:24,988 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:03:24,988 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:03:24,997 INFO ]: TraceAbstraction initialized [2018-06-22 09:03:24,997 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:03:24" (1/3) ... [2018-06-22 09:03:24,998 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bbf7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:03:24, skipping insertion in model container [2018-06-22 09:03:24,998 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:03:24" (2/3) ... [2018-06-22 09:03:24,999 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bbf7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:03:24, skipping insertion in model container [2018-06-22 09:03:24,999 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:03:24" (3/3) ... [2018-06-22 09:03:25,001 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:03:25,011 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:03:25,021 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:03:25,072 INFO ]: Using default assertion order modulation [2018-06-22 09:03:25,072 INFO ]: Interprodecural is true [2018-06-22 09:03:25,072 INFO ]: Hoare is false [2018-06-22 09:03:25,072 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:03:25,072 INFO ]: Backedges is TWOTRACK [2018-06-22 09:03:25,072 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:03:25,073 INFO ]: Difference is false [2018-06-22 09:03:25,073 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:03:25,073 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:03:25,091 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:03:25,105 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:03:25,105 INFO ]: Found error trace [2018-06-22 09:03:25,106 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:03:25,106 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:03:25,110 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:03:25,111 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:03:25,112 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:03:25,149 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:25,150 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:03:25,150 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:25,271 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:25,399 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:03:25,401 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:03:25,401 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:03:25,403 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:03:25,415 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:03:25,416 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:03:25,418 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:03:25,526 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:03:25,526 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:03:25,526 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:03:25,528 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:03:25,528 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:03:25,541 INFO ]: With dead ends: 9 [2018-06-22 09:03:25,541 INFO ]: Without dead ends: 9 [2018-06-22 09:03:25,544 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:03:25,562 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:03:25,589 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:03:25,591 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:03:25,591 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:03:25,592 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:03:25,593 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:03:25,593 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:03:25,593 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:03:25,593 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:03:25,593 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:03:25,593 INFO ]: Found error trace [2018-06-22 09:03:25,593 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:03:25,594 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:03:25,594 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:03:25,594 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:03:25,594 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:03:25,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:25,595 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:03:25,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:25,735 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:25,914 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:03:25,914 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:03:25,914 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:03:25,924 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:03:26,083 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:26,096 INFO ]: Computing forward predicates... [2018-06-22 09:03:26,154 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:03:26,176 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:03:26,176 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:03:26,177 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:03:26,177 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:03:26,177 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:03:26,177 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:03:26,306 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:03:26,306 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:03:26,307 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:03:26,307 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:03:26,307 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:03:26,307 INFO ]: With dead ends: 10 [2018-06-22 09:03:26,307 INFO ]: Without dead ends: 10 [2018-06-22 09:03:26,308 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:03:26,308 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:03:26,309 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:03:26,309 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:03:26,310 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:03:26,310 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:03:26,310 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:03:26,310 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:03:26,310 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:03:26,310 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:03:26,310 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:03:26,310 INFO ]: Found error trace [2018-06-22 09:03:26,310 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:03:26,310 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:03:26,310 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 09:03:26,310 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:03:26,310 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:03:26,312 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:26,312 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:03:26,312 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:26,425 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:26,672 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:03:26,673 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:03:26,673 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:03:26,680 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:03:26,851 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:03:26,851 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:26,857 INFO ]: Computing forward predicates... [2018-06-22 09:03:27,543 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-06-22 09:03:27,557 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:03:27,592 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:03:27,592 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 09:03:27,592 INFO ]: Interpolant automaton has 8 states [2018-06-22 09:03:27,592 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 09:03:27,592 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 09:03:27,592 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 09:03:27,719 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:03:27,719 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:03:27,720 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:03:27,720 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 09:03:27,720 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:03:27,720 INFO ]: With dead ends: 11 [2018-06-22 09:03:27,720 INFO ]: Without dead ends: 11 [2018-06-22 09:03:27,720 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:03:27,721 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:03:27,721 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:03:27,722 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:03:27,722 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:03:27,722 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 09:03:27,722 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:03:27,722 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:03:27,722 INFO ]: Interpolant automaton has 8 states. [2018-06-22 09:03:27,722 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:03:27,722 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:03:27,722 INFO ]: Found error trace [2018-06-22 09:03:27,723 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:03:27,723 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:03:27,723 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 09:03:27,723 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:03:27,723 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:03:27,724 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:27,724 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:03:27,724 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:03:27,877 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:28,594 WARN ]: Spent 401.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2018-06-22 09:03:28,745 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:03:28,745 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:03:28,745 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:03:28,751 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:03:28,937 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 09:03:28,938 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:03:28,946 INFO ]: Computing forward predicates... [2018-06-22 09:03:29,250 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 09:03:30,041 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 09:03:30,467 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 09:03:30,879 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 09:03:31,031 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-22 09:04:44,055 INFO ]: Timeout while computing interpolants [2018-06-22 09:04:44,255 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:04:44,255 WARN ]: Verification canceled [2018-06-22 09:04:44,259 WARN ]: Timeout [2018-06-22 09:04:44,259 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:04:44 BoogieIcfgContainer [2018-06-22 09:04:44,259 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:04:44,260 INFO ]: Toolchain (without parser) took 79924.64 ms. Allocated memory was 306.7 MB in the beginning and 1.0 GB in the end (delta: 731.9 MB). Free memory was 248.1 MB in the beginning and 832.0 MB in the end (delta: -583.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 09:04:44,261 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:04:44,263 INFO ]: ChcToBoogie took 91.95 ms. Allocated memory is still 306.7 MB. Free memory was 247.1 MB in the beginning and 244.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:04:44,263 INFO ]: Boogie Preprocessor took 56.88 ms. Allocated memory is still 306.7 MB. Free memory was 244.1 MB in the beginning and 243.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:04:44,264 INFO ]: RCFGBuilder took 494.93 ms. Allocated memory is still 306.7 MB. Free memory was 243.1 MB in the beginning and 210.7 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 3.6 GB. [2018-06-22 09:04:44,264 INFO ]: TraceAbstraction took 79271.14 ms. Allocated memory was 306.7 MB in the beginning and 1.0 GB in the end (delta: 731.9 MB). Free memory was 209.7 MB in the beginning and 832.0 MB in the end (delta: -622.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 09:04:44,278 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 91.95 ms. Allocated memory is still 306.7 MB. Free memory was 247.1 MB in the beginning and 244.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.88 ms. Allocated memory is still 306.7 MB. Free memory was 244.1 MB in the beginning and 243.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 494.93 ms. Allocated memory is still 306.7 MB. Free memory was 243.1 MB in the beginning and 210.7 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79271.14 ms. Allocated memory was 306.7 MB in the beginning and 1.0 GB in the end (delta: 731.9 MB). Free memory was 209.7 MB in the beginning and 832.0 MB in the end (delta: -622.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 24192 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 79.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1252 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-04-44-295.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-04-44-295.csv Completed graceful shutdown